Transactions must be signed by a private key in order to hold any value. Since all digital assets are created from transactions, signatures play a critical role in any blockchain. In this article, we’ll learn how Ethereum transactions are signed. — In our previous articles, we went through the process of creating a private key and learned what can be done with it. Specifically, in part one, we learned that keys are nothing more than random numbers of astronomical proportions, whereas in part two we looked at how these numbers can…